DIAGNOSTIC USEFULNESS OF OPTICAL COHERENCE TOMOGRAPHY (OCT), SCANNING LASER TOMOGRAPHY (HRT-II) AND LASER POLARIMETRY (GDx) IN OPEN- ANGLE GLAUCOMA CAPACIDAD DE LA TOMOGRAFÍA DE COHERENCIA ÓPTICA (OCT), LÁSER CONFOCAL DE BARRIDO (HRT-II) Y POLARIMETRÍA LÁSER (GDx) EN LA DETECCIÓN DE DAÑO ESTRUCTURAL EN EL GLAUCOMA CRÓNICO SIMPLE

Purpose: To evaluate the diagnostic ability of three digital imaging technologies (HRT-II, OCT and GDx VCC) in detecting glaucomatous damage. Methods: A total of 427 eyes from 427 subjects were included in this cross-sectional study. Each subject was classified as healthy, ocular hypertensi- ve or glaucomatous, according to intraocular pres- sure levels, standard automated perimetry and optic disc morphology. All of them underwent examina- tion by means of HRT, OCT and GDx VCC. Recei- ver operating characteristic (ROC) curves were plotted and sensitivities at fixed specificities (85% and 95%) were calculated for each parameter asses- sed. Results: The parameters with the higher diagnostic ability were: FSM discriminant function from HRT- II (AUC=0.899), retinal nerve fiber layer average